diff --git a/libweston/color-lcms/color-lcms.c b/libweston/color-lcms/color-lcms.c
index 97e6d6ab3..67d53d71b 100644
--- a/libweston/color-lcms/color-lcms.c
+++ b/libweston/color-lcms/color-lcms.c
@@ -34,6 +34,21 @@
 #include "color-lcms.h"
 #include "shared/helpers.h"
 
+const char *
+cmlcms_category_name(enum cmlcms_category cat)
+{
+	static const char *const category_names[] = {
+		[CMLCMS_CATEGORY_INPUT_TO_BLEND] = "input-to-blend",
+		[CMLCMS_CATEGORY_BLEND_TO_OUTPUT] = "blend-to-output",
+		[CMLCMS_CATEGORY_INPUT_TO_OUTPUT] = "input-to-output",
+	};
+
+	if (cat < 0 || cat >= ARRAY_LENGTH(category_names))
+		return "[illegal category value]";
+
+	return category_names[cat] ?: "[undocumented category value]";
+}
+
 static cmsUInt32Number
 cmlcms_get_render_intent(enum cmlcms_category cat,
 			 struct weston_surface *surface,
diff --git a/libweston/color-lcms/color-lcms.h b/libweston/color-lcms/color-lcms.h
index bd13187f9..47e421295 100644
--- a/libweston/color-lcms/color-lcms.h
+++ b/libweston/color-lcms/color-lcms.h
@@ -114,6 +114,9 @@ enum cmlcms_category {
 	CMLCMS_CATEGORY_INPUT_TO_OUTPUT,
 };
 
+const char *
+cmlcms_category_name(enum cmlcms_category cat);
+
 static inline struct cmlcms_color_profile *
 get_cprof(struct weston_color_profile *cprof_base)
 {